I am a newbie to cake decorating and I made Italian Meringue Buttercream because I didn't want to use a oh so sweet buttercream. Once I had added Americolor Food colorings into my BC it changed it's consistency and once I decorated it with a decorator's bag the color was bleeding out of the BC icing when decorating the cake. Can anyone please help me understand why this happened and is there any corrective solution to resolve this problem?